Patents by Inventor Wen-Fang Shi

Wen-Fang Shi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Sulfur-containing oligomer and dendrimer of acrylate and preparation methods thereof
    Patent number: 9068046
    Abstract: Sulfur-containing oligomer and dendrimer of acrylate and preparation methods thereof are provided. The sulfur-containing oligomer and dendrimer of acrylate are prepared by reacting monomers A and B in Michael addition reaction.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: June 30, 2015
    Assignee: Eternal Materials Co., Ltd.
    Inventors: Xiu-Xia Ma, Wen-Fang Shi, Jing Jiang, Sheng-Yao Hsueh, Chih-Kang Chou
  • SULFUR-CONTAINING OLIGOMER AND DENDRIMER OF ACRYLATE AND PREPARATION METHODS THEREOF
    Publication number: 20140171597
    Abstract: Sulfur-containing oligomer and dendrimer of acrylate and preparation methods thereof are provided. The sulfur-containing oligomer and dendrimer of acrylate are prepared by reacting monomers A and B in Michael addition reaction.
    Type: Application
    Filed: September 27, 2013
    Publication date: June 19, 2014
    Inventors: Xiu-Xia MA, Wen-Fang Shi, Jing Jiang, Sheng-Yao Hsueh, Chih-Kang Chou
  • Acrylated semi-crystalline hyperbranched polyurethane oligomer and preparation method thereof
    Patent number: 7897718
    Abstract: The present invention relates to an acrylated semi-crystalline hyperbranched polyurethane oligomer and a preparation method thereof, which is characterized in that on the basis of the synthesis of hyperbranched polyurethane oligomer, it adopts a two-step process to make modifications to form a methacrylic and/or acrylic double bond and a long carbon chain with a carbon atom number higher than 10 or a benzene ring or a naphthalene ring at the terminals. The obtained oligomer has a lower melting point and a higher glass transition temperature and can be cured by means of radiation, and the curing rate is high enough to effectively improve production efficiency and save energy to form a cured film having a higher hardness and excellent thermal stability. The raw materials used in the method of the invention are easily obtained, and the method is suitable for large-scale production in industry.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: March 1, 2011
    Assignee: Eternal Chemical Co., Ltd.
    Inventors: Chi-Kang Chang, Chin-Yuan Chen, Wen-Fang Shi, Hong-Bo Liang
  • Acrylated semi-crystalline hyperbranched polyurethane oligomer and preparation method thereof
    Publication number: 20060264598
    Abstract: The present invention relates to an acrylated semi-crystalline hyperbranched polyurethane oligomer and a preparation method thereof, which is characterized in that on the basis of the synthesis of hyperbranched polyurethane oligomer, it adopts a two-step process to make modifications to form a methacrylic and/or acrylic double bond and a long carbon chain with a carbon atom number higher than 10 or a benzene ring or a naphthalene ring at the terminals. The obtained oligomer has a lower melting point and a higher glass transition temperature and can be cured by means of radiation, and the curing rate is high enough to effectively improve production efficiency and save energy to form a cured film having a higher hardness and excellent thermal stability. The raw materials used in the method of the invention are easily obtained, and the method is suitable for large-scale production in industry.
    Type: Application
    Filed: May 18, 2006
    Publication date: November 23, 2006
    Inventors: Chi-Kang Chang, Chin-Yuan Chen, Wen-Fang Shi, Hong-Bo Liang